基于龍勃透鏡的低副瓣高交叉極化陣列天線

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摘要:為使陣列天線同時具有高增益、低副瓣和高交叉極化比的特性,文章通過在饋源上放置龍勃透鏡來提高天線增益,對饋電網絡進行幅度加窗和180°反相饋電設計,大幅降低了天線的副瓣,提高了天線的交叉極化比。
關鍵詞:龍勃透鏡;陣列天線;低副瓣;交叉極化比
doi:10.3969/J.ISSN.1672-7274.2022.04.009
中圖分類號:TN 927.21 文獻標示碼:A 文章編碼:1672-7274(2022)04-0026-02
Low Minor Lobe and High Cross-Polarization Array Antenna Based on Luneburg Lens
GUI Wanru, YANG Ruyi
(Hefei Rhosoon Intelligent Technology Co., Ltd., Hefei 230088, China)
Abstract: The array antenna should have high gain, low minor lobe and high cross-polarization ratio at the same time. In this paper, the antenna gain is improved by placing the Luneburg lens on the feed and the design of amplitude windowing and 180° inverting feed is carried out for the feed network, which greatly reduces the minor lobe and improves the cross-polarization ratio of the antenna.
Key words: Luneburg lens; array antenna; low minor lobe; cross-polarization ratio
1 研究背景
陣列天線是一類由不少于兩個天線單元規(guī)則或隨機排列并通過適當激勵獲得預定輻射特性的特殊天線,其所用的輻射源可以根據天線饋電電流、間距、電長度等不同參數,按照直線或者其他復雜形式來構成陣列以獲取和調節(jié)最優(yōu)的輻射方向特性,由此在現代移動通信、衛(wèi)星通信、廣播電視等領域得到了廣泛應用[1]。(剩余1813字)